body{
	margin: 0;
	padding: 0;
    font-family: "微软雅黑";
    position: relative;
    width: 100vw;
    height: 100vh;
    position: relative;
}
* {
    font-size: 4vw;
    box-sizing: border-box;
}
a {
    text-decoration: none;
}
a:link {color:#000;}/* 未被访问的链接 */

a:visited {color:#000;}/* 已被访问的链接 */

a:hover {color:#000;}/* 鼠标指针移动到链接上 */

a:active {color:#000; text-decoration: none;}/* 正在被点击的链接 */

.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
.home {
    width: 100%;
    height: 100%;
    position: relative;
}
.home>img {
    position: absolute;
    width: 100vw;
    /* height: 750px; */
}

.home a img {
    width: 2em;
}

.home a span {
    font-size: 1.5em;
}

.home .androiddown {
    position: absolute;
    color: #fff;
    width: 66%;
    height: 4em;
    top: 23em;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    border: 1px solid #fff;
    margin: auto 17%;
}
.home .iosdown {
    position: absolute;
    color: #fff;
    width: 66%;
    height: 4em;
    top: 29em;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    border: 1px solid #fff;
    margin: auto 17%;
}